Composition for removing scale

Details Composition for removing scale Composition for removing scale

1995-06-07

1997-11-11

Hruskoci, Peter A.

Cleaning and liquid contact with solids

Processes

For metallic, siliceous, or calcareous basework, including...

134 2213, 134 2214, 134 2217, 134 2219, 134 251, 134 41, 210698, 252 82, 252180, C23G 106

Patent

active

056859180

ABSTRACT:
Alkaline earth metal scales, particularly barium sulfate and strontium sulfate, and silica-based scales, particularly potassium fluorosilicate, are removed from industrial processing equipment, tubular goods, and other scaled materials with a composition comprising sufficient potassium base to provide an overall system pH of between about 12.0 to about 14.0, a polyaminocarboxylic acid, preferably EDTA, a hydroxycarboxylic acid synergist, a pH buffering agent, a wetting agent, and optionally a sodium base.

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